15-Day Weather Forecast - San Antonio
15-day weather forecast for San Antonio: temperatures from 19°C (66°F) to 39°C (102°F). Average daily high 36°C (97°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
San Antonio's 15-day outlook ranges from a low of 19°C to a high of 39°C, with an average daytime high near 36°C. That's 3° above the long-term average high of 33°C for this time of year. It continues a recent pattern — 27 of the last 28 days with published data have run warmer than normal. Air quality is currently good (AQI 46), with no notable outdoor health concerns.
Today vs Normal
The long-term average high for today is 33°C.
27 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Extended Outlook for San Antonio
Over the next 15 days, San Antonio is forecast to see temperatures ranging from 19°C to 39°C, averaging a daily high of 36°C. The extended outlook indicates occasional showers on 4 days, with 10 mm total accumulation. High temperatures may pose heat stress - stay hydrated and limit sun exposure during peak afternoon hours.